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The Atomic Mass

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Last updated about 1 year ago
15 questions
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Question 1
1.
A) The atomic number is the number of protons in an elements nucleus. How many protons does Potassium have based on the picture below? __________
B) Below is the correct element square for tin. Why does tin have an element symbol of Sn? __________
C) What is the atomic mass for palladium? __________
D) What is the atomic number of Mg? __________What is the atomic mass of magnesium (Mg)? __________
Question 2
2.
Below is the element square for an element Mr. Guesno just made chickenium. But Mr. Guesno incorrectly labled the element symbol as cH


A) Help Mr. Guesno re-write cH in the correct way that it should appear in the element square. _______

Below is the element square for francium. But the designer of this element square incorrectly labeled the element symbol as fr
B) Re-write fr in the correct way that it should appear in the element square._______
Question 3
3.
A) How many neutrons are there in fluorine (F)? __________
B) How many neutrons are there in Fake Element y (Fyy)? __________
C How many neutrons are there in Fake Element x (Fxx)? __________
Question 4
4.
How many neutrons are there in Fake Element z (Fzz)?


Neutrons = _______
Question 6
6.

A) Using the periodic table above, which element has only 10 protons? __________
B) Using the periodic table above, if you added 4 protons to the nucleus of Oxygen what would the element become? __________
C) Using the periodic table above, which element has only 6 neutrons? __________
Trim End | 01:40
Question 7 | 00:20
Question 8 | 00:42
Question 9 | 01:14
Question 10 | 01:40
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Question 7
00:20
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Question 8
00:42
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Question 9
01:14
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Question 10
01:40
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Part 1: Isotopes

Click on the 'Isotopes' tab in the simulation below. Use the simulation to answer questions 4-11.


(If you'd like to have the simulation open in another tab, visit Isotopes and Atomic Mass PhET)
Question 12
12.

Build an atom of Hydrogen-1, Hydrogen-2, and Hydrogen-3.

What does the number (-1, -2, or -3) in the isotope name represent (hint: what does adding neutrons effect at a glance)?

Question 13
13.

Build a Hydrogen-1 isotope. Click between the 'Mass Number' and 'Atomic Mass (amu)' options on the scale. Do the same thing but by building a Hydrogen-2 isotope.

Match the numbers below.

Draggable itemarrow_right_altCorresponding Item
Mass number of Hydrogen-1
arrow_right_alt
1
Atomic mass of Hydrogen-1
arrow_right_alt
1.00783
Mass number of Hydrogen-2
arrow_right_alt
2
Atomic mass of Hydrogen-2
arrow_right_alt
2.01410
Question 14
14.

Next, click on 'Boron' on the periodic table. Build an isotope of Boron-9, Boron-10, and Boron-11. Click between the 'Mass Number and 'Atomic Mass (amu)' options on the scale.

Match the numbers below

Draggable itemarrow_right_altCorresponding Item
Mass number of Boron-10
arrow_right_alt
9
Atomic mass of Boron-11
arrow_right_alt
10
Atomic mass of Boron-10
arrow_right_alt
11
Mass number of Boron-11
arrow_right_alt
11.00931
Mass number of Boron-9
arrow_right_alt
10.01294
Question 15
15.

Keep your 'Boron' isotope open. Click on the 'Abundance in Nature' tab.

Which of the following isotopes of Boron are present in nature?

Question 7
7.

Isotopes are 2 or more types of atoms that have the _______ atomic number (number of protons in their nuclei) and position on the periodic _______ but have different (mass numbers) due to different numbers of _______ in their nuclei.
Question 8
8.
A) Isotope = __________
B) The number of protons in the nucleus is called the __________
C) The sum (or addition) of the # of protons and neutrons in the nucleus is called the atoms __________
Question 9
9.

Isotopes of sodium

Question 10
10.